Bp Ultimate???

[gsb876]

Right i realise this was debated a while ago but canna remember the outcome??

Is BP ultimate as good as Optimax???

The reason i ask is due to the local optimax output changing to BP pumps last week and the other closest one is like on the motorway!!!

Any views guys??

Gurj

ps - will BP ulitmate threaten the rx engine @ high performance too??

[davefrith]

I think Ultimate is a lower Octane

[gsb876]

Yea i know that Dave but will it damage thee rotary???

PS- you got PM on the FDUK forum buddy about tomorrows reading meet?

Gurj:wave

[davefrith]

yeah but Carl reckons its cancelled tomorrow ?? :confused:

I don\'t think it would damage the roatary in anyway, can\'t see how it would, use some Octane booster if you are worried perhaps

[gsb876]

Tomorrows 21 SEPT he says 21 OCT cancelled?

Unless he got the months wrong perhaps??

[davefrith]

I don\'t know, will try and ring Dave to find out

[gsb876]

Had a quick look at the fixtures list theres no game for reading tomorrow???

They play sat away @ watford and then on the 19th Oct v Leeds @ home???

Confusing no???

[davefrith]

just spoke to Dave at TVMOT who spoke to Def, and theres a late rearrnaged game or something so its off, though Henning is organising a FDUK meet I think

[gsb876]

ok keep us posted dude?

[Jin Kazama]

To answer your question, BP Ultimate is 97 (the same as any other super unleaded) and Optimax is 98.
97 is perfectly safe if your car is stock.

Quoted from an earlier thread:
"You can run your car on unleaded 95 but it will not be safe when driven hard. The higher the RON of the fuel you put in, the lower the likelyhood is of detonation or \'pinking\' occuring.... which incidentally can be fatal to a rotary. Many people including myself use Optimax RON 98 as it is the highest octane rated fuel available from the pump in the UK. Modified Jap imports with aftermarket ECU\'s will have been mapped for 100RON fuel and if running high boost levels you will need to put octane booster in too- or get the ECU remapped for UK fuel. Hope this helps."

[davefrith]

Surely if your car has been mapped on 97 its safe I would have thought

[Jin Kazama]

Indeed it would be perfectly safe to run fuel on which the ECU has been mapped on. But GSB876 has not indicated what fuelling modifications, if any, he has carried out or inherited on his car, so I have tried to offer the various likely scenarios.

[gsb876]

ok bit of confusion going on here,

what i wanted to know was with BP ulitmate  suposedly for high performance cars right?? The optimax we usually use is 98 ron i know that and i know that the bp is 97 ron. Not disputing that what i wanted to know was how much difference is there between the two???

And no i dont mean 1 ron differnce what i wanted to know was the possibility of detonation - ie how much more of a chance is there???

Hope thats clearer??? my car has been mapped at wgt engineering only 3 weeks ago running on uk fuel of optimax, car is running T78 turbine setup into the high 400\'s bhp figures!!!

No comment from you here  "HIPPY"!!!:rollin

[Shark]

Depends how you drive the car mate.

1RON won\'t make much difference unless you\'re thrashing it.  Which with the power in your car would be scary enough on a road.

Basically it\'s 1% more of the fuel you put in which might not be octane, and therefore may be more prone to early detonation.  
What boost are you running?

I think.

[gsb876]

I dont run over 1bar too careful with my car:rolleyes: